From: sudeep.holla@arm•com (Sudeep Holla)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH 3/8] ARM64: dts: Prepare configs for Amlogic Meson GXBaby
Date: Tue, 1 Mar 2016 16:19:37 +0000 [thread overview]
Message-ID: <56D5C119.8070609@arm.com> (raw)
In-Reply-To: <56D5B2D5.9010405@suse.de>
On 01/03/16 15:18, Andreas F?rber wrote:
> Am 01.03.2016 um 15:43 schrieb Sudeep Holla:
>> On 29/02/16 23:44, Andreas F?rber wrote:
>>> + psci {
>>> + compatible = "arm,psci";
>>
>> Any particular reason why PSCI v0.2 or above is not supported on this
>> platform. PSCI v0.1 is very old now and I assume this platform is
>> relatively new.
>
> I am not affiliated with Amlogic or Tronsmart, so I cannot answer why.
>
OK
>>> + method = "smc";
>>> + cpu_suspend = <0xc4000001>;
>>> + cpu_off = <0x84000002>;
>>> + cpu_on = <0xc4000003>;
>>> + migrate = <0xc4000005>;
>>
>> Atleast the functions ids look like v0.2 or above. So check if it's
>> actually v0.2 or above
>
> If you let me know how! Just change the compatible string to -0.2 and
> wait for some big boom or watch out for any misbehavior in particular?
Not exactly. Just having -0.2 in compatible will issue PSCI_VERSION
which *should be* available in v0.2 and above. If you get error there,
then we can *assume* it's PSCI v0.1. Hopefully it be sanely return
error if that's not implemented.
Note that we can only assume, as it might be v0.2 but missed to
implement PSCI_VERSION which is mandatory though.
> Are there any memory locations to check the version or something visible
> in U-Boot source code indicating it?
>
Ah so, PSCI is implemented in U-Boot on this platform ? If so, and if
the source is available it should not be that hard to figure that out.
--
Regards,
Sudeep
next prev parent reply other threads:[~2016-03-01 16:19 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-29 23:44 [PATCH 0/8] ARM64: meson: GXBaby (S905) and Vega S95 enablement Andreas Färber
2016-02-29 23:44 ` [PATCH 1/8] ARM64: Enable Amlogic Meson GXBaby platform Andreas Färber
2016-03-01 14:43 ` Sudeep Holla
2016-03-01 15:26 ` Andreas Färber
2016-03-01 16:07 ` Sudeep Holla
2016-02-29 23:44 ` [PATCH 2/8] Documentation: devicetree: amlogic: Document Meson GXBaby Andreas Färber
2016-02-29 23:44 ` [PATCH 3/8] ARM64: dts: Prepare configs for Amlogic " Andreas Färber
2016-03-01 14:43 ` Sudeep Holla
2016-03-01 15:18 ` Andreas Färber
2016-03-01 16:19 ` Sudeep Holla [this message]
2016-02-29 23:44 ` [PATCH 4/8] Documentation: devicetree: Document Tronsmart vendor prefix Andreas Färber
2016-03-01 11:37 ` Matthias Brugger
2016-03-01 11:53 ` Andreas Färber
2016-03-01 13:29 ` Matthias Brugger
2016-03-01 19:23 ` Beniamino Galvani
2016-03-03 23:57 ` Rob Herring
2016-02-29 23:44 ` [PATCH 5/8] Documentation: devicetree: amlogic: Document Tronsmart Vega S95 boards Andreas Färber
2016-02-29 23:44 ` [PATCH 6/8] ARM64: dts: amlogic: Add Tronsmart Vega S95 configs Andreas Färber
2016-02-29 23:55 ` Andreas Färber
2016-02-29 23:44 ` [PATCH 7/8] ARM64: dts: amlogic: Extend GXBaby GIC node Andreas Färber
2016-03-01 11:01 ` Andre Przywara
2016-03-01 11:18 ` Andreas Färber
2016-03-01 11:42 ` Matthias Brugger
2016-03-01 12:43 ` Andre Przywara
2016-03-01 12:53 ` Carlo Caione
2016-03-01 14:16 ` Andre Przywara
2016-03-01 22:46 ` Andreas Färber
2016-03-01 22:58 ` André Przywara
2016-03-01 23:31 ` Andreas Färber
2016-03-02 0:03 ` André Przywara
2016-03-02 0:07 ` Andreas Färber
2016-02-29 23:44 ` [PATCH 8/8] ARM64: dts: amlogic: Add arch timer node for Meson GXBaby Andreas Färber
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=56D5C119.8070609@arm.com \
--to=sudeep.holla@arm$(echo .)com \
--cc=linux-arm-kernel@lists$(echo .)infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox